Process for high speed rescaling of binary images
US5335296A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 1993 |
| Grant date | Aug 2, 1994 |
| Priority date | — |
| Expiry date | Feb 4, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G5/391
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and process for scaling a binary image. The present invention includes a prestored set of scaler, or look-up, tables that each map all combinations of a specified number of input bits into a specified number of output bits. A sequencer is generated to direct the column scaling of the image. The sequencer includes a bit-string wherein each bit specifies the selection by a scaler function of a scaler table allowing interpolation of a preselected scale factor. The sequencer also includes information that allows the efficient processing of image data by aligning processed data on memory boundaries of a computer. The present invention may be used by an image memory management system or an image processing application to rescale images at high speeds on a conventional computer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.